Limestone.
It is a sedimentary rock composed of calcite and aragonite. It is used as a building material mainly because it is easily available and easy to work with.
Limestone is used in the manufacture of steel as it is the primary raw material that helps to remove impurities from the iron ore and produces waste matter that has low melting point and viscosity
Answer:
I think that it's A.
Explanation:
It's not D, because A & C contrast each other.
What are the answer choices ?
Yes, DNA is genetic information that is found in all cells
